[BUG (Emulator)] Emulator eats CPU when in Advanced Graphing Plot view

[Stefan]

Note: I'm running the emulator in Wine (Crossover to be specific). So maybe this doesn't occur under Windows.

Bug description:
Open the Advanced Graphing App, enter an expression to plot in symbolic view (e.g. Y^2+X^2<=1)
Switch to Plot view.

Result:
HP Prime emulator uses one complete CPU core, Fan is turning crazy :-)
Note: Although the CPU core is loaded 100%, the emulator doesn't get unresponsive.

@jebem: See, now I'm reporting on bugs in the emulator :-)